Bur-block.



F. W. MILLER.

BUR BLOCK,

APPLIGATION FILED MAY 2s, 191e.

Patented Dec. 22, 1914,

treuren srarns ,earner cranica.

FREDERICK W. MILLER 0F TOLEDO, OHIO, ASSIGNOR- TO RANSOM AND RANDOLPH G0., vOF TOLEDO, OHIO, A CORPORATION OF OHIO.

'BUR-BLOCK.

Specification of Letters Patent.

Patented Dec. 22, tte.

application ined may as, i913. seriai no. massa' T 0 all whom t may Concern Beit known that I, FREDERICK W. MILLER, .t citizen of the United States, residing. at rfoledo, in the county of Lucas and State of Ohio, have invented a certain new and u seful improvement in Builocks, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to bur blocks, and the speciiic embodiment of my invention herein shown and described is particularly adapted' for use in sliippi-ng, holding and displaying engine burs such as are commorily used by dentists.

The device herein shown comprises a receptacie' consisting of a circular lower inember or base part, and a cover therefor, the said hase part being provided with a centrally-disposed post or stud. Disposed in the said base part and fitting snugly therein is a block provided with a centraly opening into which the before-mentioned post projects. The depth of the opening in the blo'ck is slightly less than the height of the post which projects therein, in order that the lower portion of the block may clear the bottom of the receptacle, thereby permitting the block to be readily turned within the receptacle. The block is provided with a p lurality'of annular steps or ledges, there being f a plurality of openings drilled in each of the ledges.' Each of these openings is designed to receive an engine bur.

The particular advantages of the construction herein described and subsequently claimed, are as follows:

The bottom of the base part of the bur block receptacle is upwardly dished so that in spite of irregularities in the surface of a desk or table upon which the base of the receptacle is placed, the same willl be adequately supported at or near its periphery, thereby preventing it from turning readily when the rotatable block is turned. The bearing of the wooden block, although of inexpensive construction, provides a sufficiently rigid support for the block, at the same time permitting the block to turn very easily within the receptacle. The annular ledges or steps in therotatable blockserve to display all of the burs and-make it possible to grasp any desired bur.

The receptacle cover is so shaped that the block filled with burs or other instruments or tools, can be shipped in a light carton without danger of the individual burs or tools falling out of the holes provided in the rotatable block.` It is thus possible to ship a block full of instruments all mounted in place in the block with the assurance that they will arrive at their destination in place Y as originally packed. The upper and lower sections of the receptacle are preferably nickel-plated, or otherwise highly polished. It is of course desirable from the standpoint of the dentist to keep this receptacle'li'ighly polished in order thatl it may present an attractive appearance. Then it is: desirable to polish the receptacle the rotatableblock may be readily lifted out ofthe base 'part of they receptacle, thus enabling one to wash and'polish the receptacle without danger of wetting the 'wooden block,'there'by Ica-'isi-ng it to swell, and without danger of-daubing the rotatable block or burs with the polish which may be employed.

In the drawings illustrating my invention: Figure 1 is a cross-sectional View taken through the device'withthe'cover in place, showing a number of burs disposed in the holes in the rotatable block, and Fig. 2 is a plan view with the cover removed.

Similar reference numerals refer to simila'r parts throughout the several views.

In the drawings, 'repi'esents the base part of the receptacle, the bottom thereof being upwardly dished, as illustrated. 'The receptacle cover is shown at 4. The base part 3 is provided with a centrally-located cylindrical post 5, which projects into a central opening in a circular wooden block 6 and supports the said block. The opening in the block 6 is preferably provided with a metallic lining 7 in order-to avoid excessive wear on the parts which would otherwise result. It should be noted that the bottoni of the block 6 is spaced slightly from the bottom of the base part 3. The said block, being supported entirely by the central post 5, may be readily rotated within the receptacle base part 3. Tlius,any bur carried by the block may be readily removed froin the same. The block 6 is provided with a plurality of annular steps or ledges 8, in each of which there is drilled a plurality of holes 9. These holes 9 are intended toreceive engine burs 10, as clearly shown in Fig. 1. A suitable name plate ll carried by the top of the block adds materially to the general appearance of the same. f

in important advantage Which the construction here shown has, is that after a dentist has been supplied With the complete block, including the receptacle, he can subsequently buy i'ull gross lots of burs mounted in the wooden block only. 'lhus the rotatable block, filled With burs, may be shipped to a. dentist Who can replace the old block with a new one filled With burs. Since the wooden. blocks themselves are inexpensive they provide a convenient means of packing a gross of burs to be sent to a dentist already supplied with the receptacle.

The device odors an advantage to the manufacturer in that a dentist already supplied with the receptacle Will be likely to order a new7 block containing a full gross ot' burs since the dentist Will appreciate the convenience of being 'able to slip the new block into the receptacle which he already has.

What l claim and desire to secure by lietters Patent of the United States is:

l. A device of the class described comprising a receptacle consisting of a circular base part and cover therefor, a circular Wooden block disposed Within said base part, said block having a plurality of annular steps and a plurality of holes in each 1 step for the reception of leurs, said block being provided with a central opening, said meinen base part being provided with a centre?. :fi

post projecting into said opening and su porting the block, said block being rotat Within said base part, and the bottoni said base part being upwardly dished, substantially as described.

2. A device of the class described com prising a receptacle, a block removably disposed in said receptacle provided central opening, a central post carried by the receptacle projecting into said opening and supporting said block, said. block being' rotatable Within said receptacle and pro-- vided with a plurality of holes for the ception of bui-s, substantially as describede 3. A device of the class described coinsaid steps for the reception of burs, siibstantially as described.

ln Witness whereof, ll hereunto subscribe my name this 17th day of May, A. ll)l i913.

FRED W. MULLER.,

liitnesses A. Gli/reinen, CLARENCE 0. Bowne. 

